The Arista BGP router must be configured to use a unique key for each autonomous system (AS) that it peers with.
An XCCDF Rule
Description
<VulnDiscussion>If the same keys are used between eBGP neighbors, the chance of a hacker compromising any of the BGP sessions increases. It is possible that a malicious user exists in one autonomous system who would know the key used for the eBGP session. This user would then be able to hijack BGP sessions with other trusted neighbors.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-256027r882423_rule
- Severity
- Medium
- References
- Updated
Remediation - Manual Procedure
Configure all eBGP Arista routers with unique keys for each eBGP neighbor that it peers with.
To configure BGP authentication, in the BGP configuration mode interface, when adding neighbors, include the following statement:
router bgp NN
neighbor 100.1.0.0 password 0 [password-string]